Cellulose ethers ua lub luag haujlwm tseem ceeb hauv kev lag luam ntawv, pab txhua yam ntawm kev tsim ntawv thiab txhim kho qhov zoo thiab kev ua tau zoo ntawm cov khoom ntawv.
1. Kev Taw Qhia Txog cellulose ether:
Cellulose ethers yog ib pawg ntawm cov polymers uas yaj tau hauv dej los ntawm cellulose, ib qho polymer ntuj pom muaj nyob rau hauv cov phab ntsa cell ntawm cov nroj tsuag. Lub hauv paus tseem ceeb ntawm cellulose ethers yog cov ntoo pulp, thiab lawv siv dav hauv ntau yam lag luam, suav nrog tshuaj, khoom noj, kev tsim kho, thiab tshwj xeeb tshaj yog kev lag luam ntawv.
2. Cov khoom ntawm cellulose ether:
a. Kev yaj dej:
Ib qho ntawm cov yam ntxwv tseem ceeb ntawm cellulose ethers yog lawv cov dej solubility. Cov yam ntxwv no ua rau lawv yooj yim dispersed hauv dej, pab txhawb lawv kev koom ua ke rau hauv lub pulp.
b. Muaj peev xwm ua yeeb yaj kiab:
Cellulose ethers muaj peev xwm tsim zaj duab xis uas pab txhim kho cov khoom nto thiab txhim kho qhov zoo ntawm daim ntawv.
c. Ua kom tuab thiab sib txuas:
Cov cellulose ethers ua haujlwm ua cov khoom ua kom tuab, ua rau cov pulp viscosity nce ntxiv. Qhov no yog qhov zoo rau kev tswj cov dej ntws ntawm pulp thaum lub sijhawm ua ntawv. Tsis tas li ntawd, lawv ua haujlwm ua cov nplaum, txhawb kev nplaum ntawm cov fibers hauv daim ntawv.
d. Ruaj khov:
Cov ethers no qhia txog kev ruaj khov nyob rau hauv ntau yam mob, suav nrog qhov kub thiab pH hloov pauv, pab txhim kho lawv txoj kev ntseeg siab hauv cov txheej txheem ua ntawv.
3..Lub luag haujlwm ntawm cellulose ethers hauv kev lag luam ntawv:
a. Kev txhim kho kev khaws cia thiab kev ntws dej:
Cov cellulose ethers paub txog lawv lub peev xwm los txhim kho kev khaws cia ntawm cov pulp thiab kev ntws tawm thaum lub sijhawm ua ntawv. Qhov no ua rau daim ntawv tiaj tus thiab txo cov dej siv.
b. Kev Ua Kom Muaj Zog:
Qhov ntxiv cov cellulose ethers ua rau daim ntawv muaj zog dua, suav nrog lub zog tensile, lub zog tawg thiab kev tiv taus kua muag. Qhov no tseem ceeb heev rau kev tsim cov ntawv zoo uas haum rau ntau yam kev siv.
c. Qhov loj ntawm qhov chaw:
Cov cellulose ethers siv rau hauv cov qauv ntsuas qhov chaw los pab tsim kom muaj qhov chaw du thiab sib npaug ntawm daim ntawv. Qhov no ua rau cov ntawv luam tawm thiab cov tsos ntawm cov khoom kawg zoo dua.
d. Kev tswj hwm kev nqus kua mem:
Hauv kev siv luam ntawv, cellulose ethers pab tswj kev nqus kua mem, tiv thaiv kev sib kis ntau dhau thiab xyuas kom meej qhov zoo ntawm kev luam ntawv.
e. Kev tswj cov porosity ntawm daim ntawv:
Cov cellulose ethers pab tswj qhov porosity ntawm daim ntawv los ntawm kev cuam tshuam rau kev tsim cov qauv ntawv. Qhov no yog qhov tseem ceeb rau cov ntawv thov xws li daim ntawv lim.
f. Cov khoom pab khaws cia rau hauv cov khoom sau thiab cov khoom ntxiv:
Cov cellulose ethers ua haujlwm ua cov khoom pab khaws cia rau cov khoom sau thiab lwm yam khoom ntxiv hauv cov txheej txheem ua ntawv. Qhov no ua kom ntseeg tau tias cov khoom xyaw no tau khaws cia zoo hauv cov qauv ntawv.
4. Daim ntawv thov ntawm cellulose ether hauv cov khoom ntawv:
a. Luam ntawv thiab sau ntawv:
Cellulose ethers yog siv dav hauv kev tsim cov ntawv luam ntawv thiab sau ntawv kom ua tiav qhov zoo tshaj plaws ntawm kev luam ntawv, kev du thiab cov khoom nto.
b. Daim ntawv qhwv:
Hauv cov ntawv ntim khoom, cellulose ethers pab ua kom muaj zog ntxiv, ua kom daim ntawv tuaj yeem tiv taus qhov nyuaj ntawm kev ntim khoom thiab kev xa khoom.
c. Cov ntaub so ntswg:
Cov cellulose ethers ua rau daim ntawv so quav mos, muaj zog thiab nqus tau dej tau zoo. Cov yam ntxwv no tseem ceeb rau cov ntaub so ntswg ntawm lub ntsej muag, daim ntawv so quav thiab lwm yam khoom siv so quav.
d. Daim ntawv tshwj xeeb:
Cov ntawv tshwj xeeb, xws li ntawv lim dej, ntawv rwb thaiv hluav taws xob, thiab ntawv kho mob, feem ntau suav nrog cellulose ethers kom ua tau raws li cov kev cai ua haujlwm tshwj xeeb.
5. Kev xav txog ib puag ncig:
a. Kev lwj ntawm lub cev:
Feem ntau cov cellulose ethers yog biodegradable, raws li kev lag luam ntawv qhov kev thov loj hlob rau kev coj ua zoo rau ib puag ncig thiab kev ruaj khov.
b. Lub zog rov ua dua tshiab:
Vim tias cellulose ethers yog los ntawm cov ntoo pulp, ib qho khoom siv rov ua dua tshiab, lawv siv pab txhawb rau kev ruaj khov ntawm cov txheej txheem tsim ntawv.
Cov cellulose ethers ua lub luag haujlwm ntau yam hauv kev lag luam ntawv, cuam tshuam rau txhua yam ntawm kev tsim ntawv thiab pab tsim cov khoom ntawv zoo. Lawv cov dej yaj, lub peev xwm tsim zaj duab xis, thiab lwm yam khoom tshwj xeeb ua rau lawv muaj txiaj ntsig zoo hauv cov txheej txheem ua ntawv. Raws li kev lag luam ntawv txuas ntxiv mus, qhov tseem ceeb ntawm cellulose ethers hauv kev txhim kho cov ntawv zoo, kev ua tau zoo thiab kev ruaj khov yuav txuas ntxiv mus thiab loj hlob.
Lub sijhawm tshaj tawm: Lub Ib Hlis-15-2024